Seintinelles - Le défi

What if you took care of yourself, at your own pace, while contributing to a joyful and worthwhile collective challenge?
Become a Relayer and join the first mission: Travel 384,400 km together, the distance from Earth to the Moon.

No need to be Marie-Josée Pérec or Thomas Pesquet!
Walk, run, hike, solo or in a team: move however you want.
The key? Do a little more than usual and according to your abilities.

Why participate?
Because physical activity plays a major role in cancer prevention: it helps reduce the risk of developing certain cancers and also prevents relapses in people in remission. In short, signing up:
• It's taking care of yourself
• It's preventing illness
• It's regaining momentum (or giving it to others if the activity is already well-established in our habits!)
And it's easier with a close-knit community and a common goal!

We invite you to install our simple app to:
• Track your progress and that of the community
• Join a team of relay runners near you
• Receive tailored content offered by Lidia Delrieu, a researcher in physical activity and health

Key features:
- Track your steps and collective progress
- Photo challenges, quizzes, and bonus missions
- Chat with other relay runners near you
- Automatic connection with Strava, Garmin, Fitbit

Download the app and become a Relay Runner now.

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Who are we? Seintinelles is an association that, for over 12 years, has mobilized a community of citizens who proactively volunteer to participate in cancer research. Today, more than 43,000 of us participate in studies on all types of cancer.
You too can join our wonderful community at www.seintinelles.com